Hello! I found this forum while searching for solutions to my problem; the community here seems friendly and knowledgeable so I signed up to ask for advice. My sister's kitchen faucet doesn't flow very well and she's been using it without an aerator for the last few months. I inspected her old aerator (it looked fine) and after reinstalling it, the water didn't flow fast enough to actually aerate. If either handle is turned about 50% of it's swing, the water flow rate hit's the highest that it will be: in other words, turning the handle 100% or turning the other handle has no appreciable affect on the flow. Both the hot and cold water lines exhibit this same behavior. The sprayer seems to be okay, but I don't know if it's at full pressure right now or if the amount of water that comes out of the faucet is enough to produce a decent jet from the sprayer. I confirmed that both shutoff valves are open fully. There aren't any noticeable leaks in the kitchen (or elsewhere in the house). Water flow is normal in every other sink. I've read through a few posts here - and a few articles elsewhere. Should my next step be to disassemble the fixture and search for a blockage? I'd be happy to receive any advice! Thank you.